[perl #105278] Add warning for exists($a[0]) and delete($a[0])

# New Ticket Created by  "Eric Brine" 
# Please include the string:  [perl #105278]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=105278 >


This is a bug report for perl from ikegami@adaelis.com,
generated with the help of perlbug 1.39 running under perl 5.14.0.


-----------------------------------------------------------------
[Please describe your issue here]

Hi,

exists($a[$i]) and delete($a[0]) are deprecated, yet they don't emit a
deprecation warning. There has been talk about removing them from core or
changing their functionality, which required the deprecated warning to be
emitted. The attached patches add a deprecation warning for those
operations.

I have previously gotten most use of exists($a[$i]) and delete($a[0])
removed from the cpan/ directory, but two remain:

- Object::Accessor has one remaining use, and there's an open ticket to
have it fixed.
- Tie::File needs to have C<< no warnings 'deprecated'; >> added around its
tests for its EXISTS and DELETE handler. I'll be happy to submit a patch
once this is committed.

Thanks,
Eric

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=low
---
Site configuration information for perl 5.14.0:

Configured by gecko at Thu May 12 09:33:39 2011.

Summary of my perl5 (revision 5 version 14 subversion 0) configuration:

  Platform:
    osname=MSWin32, osvers=5.2, archname=MSWin32-x86-multi-thread
    uname=''
    config_args='undef'
    hint=recommended, useposix=true, d_sigaction=undef
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=undef, use64bitall=undef, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='C:/Progs/PERL51~4/site/bin/gcc.exe', ccflags ='-DNDEBUG -DWIN32
-D_CONSOLE -DNO_STRICT -DPERL_TEXTMODE_SCRIPTS -DUSE_SITECUSTOMIZE
-DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO
-D_USE_32BIT_TIME_T -DHASATTRIBUTE -fno-strict-aliasing -mms-bitfields',
    optimize='-O2',
    cppflags='-DWIN32'
    ccversion='', gccversion='3.4.5 (mingw-vista special r3)',
gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=8
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='__int64',
lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='C:\Progs\PERL51~4\site\bin\g++.exe', ldflags
='-L"C:\Progs\perl5140-ap1400\lib\CORE"'
    libpth=\lib
    libs=-lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32
-lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm
-lversion -lodbc32 -lodbccp32 -lcomctl32 -lmsvcrt
    perllibs=-lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32
-lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm
-lversion -lodbc32 -lodbccp32 -lcomctl32 -lmsvcrt
    libc=msvcrt.lib, so=dll, useshrplib=true, libperl=perl514.lib
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ', lddlflags='-mdll -L"C:\Progs\perl5140-ap1400\lib\CORE"'

Locally applied patches:
    ACTIVEPERL_LOCAL_PATCHES_ENTRY

---
@INC for perl 5.14.0:
    C:/Progs/perl5140-ap1400/site/lib
    C:/Progs/perl5140-ap1400/lib
    .

---
Environment for perl 5.14.0:
    HOME (unset)
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=C:\Program Files (x86)\NVIDIA
Corporation\PhysX\Common;c:\bin;C:\Progs\perl5140-ap1400\site\bin;C:\Progs\perl5140-ap1400\bin;C:\Program
Files
(x86)\UltraEdit;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program
Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files
(x86)\Common Files\Microsoft Shared\Windows Live;C:\Program
Files\WIDCOMM\Bluetooth Software\;C:\Program Files\WIDCOMM\Bluetooth
Software\syswow64;C:\Program Files (x86)\Common Files\Ulead
Systems\MPEG;C:\Program Files\Microsoft Windows Performance
Toolkit\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files
(x86)\QuickTime\QTSystem\
    PERL_BADLANG (unset)
    SHELL (unset)

• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Eric Brine
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Nicholas Clark
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Eric Brine
• [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Father Chrysostomos via RT
• [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Eric Brine
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Eric Brine
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Eric Brine
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Eric Brine
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Jesse Luehrs
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Jesse Luehrs
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Ricardo Signes
• Re: [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Jesse Luehrs
• [perl #105278] Add warning for exists($a[0]) and delete($a[0]) by Father Chrysostomos via RT